#include <iostream>// 其次是C++的文件，第三方库文件放最下

using std::cout;
using std::endl;
class Point {
    public:
        void print()
        {
            cout << "(" << _ix 
                << "," << _iy
                << ")" << endl;
        }
        Point()
        {
            cout << "print" << endl;
        }
    private:
        int _ix;
        int _iy;
    };
    
    void test0() 
    {
        Point pt;
        pt.print();
    }
    //运行结果显示，pt的_ix,_iy都是不确定的值
    int main()
    {
        test0();
        return 0;
    }